for i in range(3):
	username = input("请输入用户名:")
	prowords = input("请输入密码:")
	if username == "hsz" and prowords == "123456":
		print("欢迎用户{}".format(username))
		print("-----轻松购物吧-----")
		break
	else:
		print("用户名或者密码输入错误，请重新输入")
		
else:
	print("账户被锁定，请重新输入")
